Investigation of saturation effects in ceramic phosphors for laser lighting

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Abstract

We report observation of saturation effects in a Ce:LuAG and Eu-doped nitride ceramic phosphor for conversion of blue laser light for white light generation. The luminous flux from the phosphors material increases linearly with the input power until saturation effects limit the conversion. It is shown, that the temperature of the phosphor layer influences the saturation power level and the conversion efficiency. It is also shown that the correlated color temperature (CCT), phosphor conversion efficiency and color rendering index (CRI) are dependent both on incident power and spot size diameter of the illumination. A phosphor conversion efficiency up to 140.8 lm/W with CRI of 89.4 was achieved. The saturation in a ceramic phosphor, when illuminated by high intensity laser diodes, is estimated to play the main role in limiting the available luminance from laser based lighting systems.
Original languageEnglish
JournalMaterials
Volume10
Issue number12
Number of pages9
ISSN1996-1944
DOIs
Publication statusPublished - 2017

Keywords

  • Phosphor-converted
  • Laser diode
  • Ce:LuAG and Eu-doped nitride
  • Saturation

Cite this

@article{277e3b5c181a409690a2647c93f18091,
title = "Investigation of saturation effects in ceramic phosphors for laser lighting",
abstract = "We report observation of saturation effects in a Ce:LuAG and Eu-doped nitride ceramic phosphor for conversion of blue laser light for white light generation. The luminous flux from the phosphors material increases linearly with the input power until saturation effects limit the conversion. It is shown, that the temperature of the phosphor layer influences the saturation power level and the conversion efficiency. It is also shown that the correlated color temperature (CCT), phosphor conversion efficiency and color rendering index (CRI) are dependent both on incident power and spot size diameter of the illumination. A phosphor conversion efficiency up to 140.8 lm/W with CRI of 89.4 was achieved. The saturation in a ceramic phosphor, when illuminated by high intensity laser diodes, is estimated to play the main role in limiting the available luminance from laser based lighting systems.",
keywords = "Phosphor-converted, Laser diode, Ce:LuAG and Eu-doped nitride, Saturation",
author = "Anastasiia Krasnoshchoka and Anders Thorseth and Carsten Dam-Hansen and Corell, {Dennis Dan} and Petersen, {Paul Michael} and Jensen, {Ole Bjarlin}",
year = "2017",
doi = "10.3390/ma10121407",
language = "English",
volume = "10",
journal = "Materials",
issn = "1996-1944",
publisher = "Molecular Diversity Preservation International, MDPI",
number = "12",

}

Investigation of saturation effects in ceramic phosphors for laser lighting. / Krasnoshchoka, Anastasiia; Thorseth, Anders; Dam-Hansen, Carsten; Corell, Dennis Dan; Petersen, Paul Michael; Jensen, Ole Bjarlin.

In: Materials, Vol. 10, No. 12, 2017.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Investigation of saturation effects in ceramic phosphors for laser lighting

AU - Krasnoshchoka, Anastasiia

AU - Thorseth, Anders

AU - Dam-Hansen, Carsten

AU - Corell, Dennis Dan

AU - Petersen, Paul Michael

AU - Jensen, Ole Bjarlin

PY - 2017

Y1 - 2017

N2 - We report observation of saturation effects in a Ce:LuAG and Eu-doped nitride ceramic phosphor for conversion of blue laser light for white light generation. The luminous flux from the phosphors material increases linearly with the input power until saturation effects limit the conversion. It is shown, that the temperature of the phosphor layer influences the saturation power level and the conversion efficiency. It is also shown that the correlated color temperature (CCT), phosphor conversion efficiency and color rendering index (CRI) are dependent both on incident power and spot size diameter of the illumination. A phosphor conversion efficiency up to 140.8 lm/W with CRI of 89.4 was achieved. The saturation in a ceramic phosphor, when illuminated by high intensity laser diodes, is estimated to play the main role in limiting the available luminance from laser based lighting systems.

AB - We report observation of saturation effects in a Ce:LuAG and Eu-doped nitride ceramic phosphor for conversion of blue laser light for white light generation. The luminous flux from the phosphors material increases linearly with the input power until saturation effects limit the conversion. It is shown, that the temperature of the phosphor layer influences the saturation power level and the conversion efficiency. It is also shown that the correlated color temperature (CCT), phosphor conversion efficiency and color rendering index (CRI) are dependent both on incident power and spot size diameter of the illumination. A phosphor conversion efficiency up to 140.8 lm/W with CRI of 89.4 was achieved. The saturation in a ceramic phosphor, when illuminated by high intensity laser diodes, is estimated to play the main role in limiting the available luminance from laser based lighting systems.

KW - Phosphor-converted

KW - Laser diode

KW - Ce:LuAG and Eu-doped nitride

KW - Saturation

U2 - 10.3390/ma10121407

DO - 10.3390/ma10121407

M3 - Journal article

VL - 10

JO - Materials

JF - Materials

SN - 1996-1944

IS - 12

ER -